/* =========================================================================
   Salsa Systems — colors_and_type.css
   Import this first in any new artifact:
     <link rel="stylesheet" href="colors_and_type.css">
   ========================================================================= */

/* -------- Fonts -------- */
@import url('https://fonts.googleapis.com/css2?family=Libre+Caslon+Text:ital,wght@0,400;0,700;1,400&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* -------- Tokens -------- */
:root {
  /* Brand colors — the full palette. Do not introduce new hues. */
  --parchment:       #F4F3EE;   /* primary background */
  --floral-white:    #FBFBF2;   /* secondary surface */
  --carbon-black:    #222222;   /* text + chrome */
  --boxy-copper:     #D66853;   /* primary accent */
  --teal-blue:       #0471A6;   /* secondary accent */

  /* Accent variants (darker / lighter) for hover + press only. */
  --copper-700:      #B8512F;
  --copper-300:      #E28F78;
  --teal-700:        #035C87;
  --teal-300:        #3A92BE;

  /* Ink scale — all derived from Carbon Black with alpha */
  --ink-100:         rgba(34, 34, 34, 1.00);
  --ink-80:          rgba(34, 34, 34, 0.80);
  --ink-60:          rgba(34, 34, 34, 0.60);
  --ink-40:          rgba(34, 34, 34, 0.40);
  --ink-20:          rgba(34, 34, 34, 0.20);
  --ink-12:          rgba(34, 34, 34, 0.12);
  --ink-08:          rgba(34, 34, 34, 0.08);
  --ink-04:          rgba(34, 34, 34, 0.04);

  /* Semantic colors */
  --bg:              var(--parchment);
  --bg-elevated:     var(--floral-white);
  --bg-inverse:      var(--carbon-black);

  --fg:              var(--ink-100);       /* body text */
  --fg-muted:        var(--ink-60);        /* captions, metadata */
  --fg-subtle:       var(--ink-40);        /* placeholder, disabled */
  --fg-inverse:      var(--floral-white);  /* on dark backgrounds */

  --border:          var(--ink-08);        /* default hairline */
  --border-strong:   var(--ink-20);
  --border-focus:    var(--teal-blue);

  --accent:          var(--boxy-copper);
  --accent-hover:    var(--copper-700);
  --accent-fg:       var(--floral-white);  /* text on copper */
  --accent-2:        var(--teal-blue);
  --accent-2-hover:  var(--teal-700);
  --accent-2-fg:     var(--floral-white);

  /* Type families */
  --font-serif:      'Libre Caslon Text', 'Iowan Old Style', Georgia, serif;
  --font-sans:       'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono:       'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  /* Type scale (px values given for reference, use tokens) */
  --fs-display:      72px;   /* hero h1 */
  --fs-h1:           56px;
  --fs-h2:           40px;
  --fs-h3:           28px;
  --fs-h4:           20px;
  --fs-lg:           18px;
  --fs-body:         16px;
  --fs-sm:           14px;
  --fs-xs:           12px;

  --lh-display:      1.05;
  --lh-heading:      1.15;
  --lh-body:         1.55;
  --lh-tight:        1.25;

  --tracking-tight:  -0.02em;
  --tracking-normal: 0;
  --tracking-wide:   0.04em;

  /* Spacing scale (4px base) */
  --sp-1:  4px;
  --sp-2:  8px;
  --sp-3:  12px;
  --sp-4:  16px;
  --sp-5:  24px;
  --sp-6:  32px;
  --sp-7:  48px;
  --sp-8:  64px;
  --sp-9:  96px;
  --sp-10: 128px;

  /* Radii */
  --radius-sm: 2px;   /* inputs, buttons */
  --radius-md: 6px;   /* small cards, chips */
  --radius-lg: 12px;  /* cards, modals */
  --radius-xl: 20px;  /* feature blocks */

  /* Shadows — nearly invisible */
  --shadow-sm: 0 1px 2px rgba(34, 34, 34, 0.06);
  --shadow-md: 0 2px 8px rgba(34, 34, 34, 0.08);
  --shadow-lg: 0 8px 24px rgba(34, 34, 34, 0.10);

  /* Motion */
  --ease-out:    cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast:    160ms;
  --dur-med:     280ms;
  --dur-slow:    480ms;

  /* Layout */
  --content-max:    1200px;
  --content-narrow: 960px;
  --nav-height:     72px;
}

/* -------- Base reset + body -------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: 'ss01', 'cv11';
}

/* -------- Semantic type -------- */
h1, .h1, h2, .h2, h3, .h3, h4, .h4, .display {
  font-family: var(--font-serif);
  color: var(--fg);
  margin: 0;
  font-weight: 400;
  letter-spacing: var(--tracking-tight);
  text-wrap: balance;
}

.display { font-size: var(--fs-display); line-height: var(--lh-display); letter-spacing: -0.025em; }
h1, .h1 { font-size: var(--fs-h1);   line-height: var(--lh-display); }
h2, .h2 { font-size: var(--fs-h2);   line-height: var(--lh-heading); }
h3, .h3 { font-size: var(--fs-h3);   line-height: var(--lh-heading); font-weight: 500; }
h4, .h4 { font-size: var(--fs-h4);   line-height: var(--lh-tight);
          font-family: var(--font-sans); font-weight: 600; letter-spacing: 0; }

p, .p {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--fg);
  margin: 0 0 var(--sp-4) 0;
  text-wrap: pretty;
}
p.lead, .lead {
  font-size: var(--fs-lg);
  line-height: 1.5;
  color: var(--ink-80);
}
small, .caption {
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  color: var(--fg-muted);
  line-height: 1.45;
}
.eyebrow {
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--fg-muted);
}
code, kbd, pre, .mono {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

a {
  color: inherit;
  text-decoration: none;
  text-underline-offset: 2px;
  transition: color var(--dur-fast) var(--ease-out);
}
a:hover { text-decoration: underline; text-decoration-thickness: 1px; }

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: var(--sp-7) 0;
}

::selection {
  background: var(--boxy-copper);
  color: var(--floral-white);
}

/* -------- Buttons (shared by preview cards + ui kit) -------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: 500;
  line-height: 1;
  padding: 14px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-in-out),
              color      var(--dur-fast) var(--ease-in-out),
              border-color var(--dur-fast) var(--ease-in-out),
              transform  var(--dur-fast) var(--ease-in-out);
  user-select: none;
  text-decoration: none;
}
.btn:focus-visible {
  outline: 2px solid var(--teal-blue);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--boxy-copper);
  color: var(--floral-white);
}
.btn-primary:hover  { background: var(--copper-700); }
.btn-primary:active { background: var(--copper-700); transform: translateY(1px); }

.btn-secondary {
  background: var(--teal-blue);
  color: var(--floral-white);
}
.btn-secondary:hover  { background: var(--teal-700); }
.btn-secondary:active { background: var(--teal-700); transform: translateY(1px); }

.btn-ghost {
  background: transparent;
  color: var(--carbon-black);
  border-color: var(--ink-20);
}
.btn-ghost:hover  { background: var(--ink-04); }
.btn-ghost:active { background: var(--ink-08); transform: translateY(1px); }

.btn-link {
  background: transparent;
  color: var(--carbon-black);
  padding: 0;
  border: 0;
  border-radius: 0;
  border-bottom: 1px solid var(--carbon-black);
  border-radius: 0;
}
.btn-link:hover { color: var(--boxy-copper); border-color: var(--boxy-copper); }

/* -------- Cards -------- */
.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  box-shadow: var(--shadow-sm);
}